反应详情

温度

52.5 °C

2-[(5-Chloro-2-{[3-methyl-1-(1-methylethyl)-1H-pyrazol-5-yl]amino}-4-pyridinyl)amino]-N-(methyloxy)benzamide (235.2 g total weight, 228.0 g assayed content, 549.5 mmoles) was slurried in ethyl acetate (7.1 L, 30 volumes). The mixture was heated to about 50-55° C. to afford a cloudy solution. The cloudy solution was filtered. To the filtered solution was added 2.0 M HCl in diethyl ether (210 g, 281 mL, 1.02 equiv.) over 15-20 minutes. Upon HCl addition, a white slurry was observed. It was stirred at room temperature for about 16-20 hours. Product was collected by filtration and rinsed with ethyl acetate (2×500 mL each). The wet cake was dried at 50-55° C./<5 mm Hg for 16-20 hours to a constant weight. 2-[(5-Chloro-2-{[3-methyl-1-(1-methylethyl)-1H-pyrazol-5-yl]amino}-4-pyridinyl)amino]-N-(methyloxy)benzamide, monohydrochloride, (245.9 g, 544.7 mmoles, 96% yield) was isolated as a white solid. 1H NMR (400 MHz, DMSO-d6) δ ppm 1.32 (d, J=6.57 Hz, 6H) 2.18 (s, 3H) 3.70 (s, 3H) 4.35-4.62 (m, 1H) 6.12 (br. s, 1H) 6.60 (br. s, 1H) 7.19-7.41 (m, 1H) 7.48-7.75 (m, 3H) 8.09 (s, 1H) 9.59-9.99 (m, 2H) 11.98 (br. s, 1H). C18 HPLC RT=6.1 minutes (99.6% purity). MS (ESI): 414.8 [M+H]+.

1. customto afford a cloudy solution
2. filtrationThe cloudy solution was filtered
3. filtrationProduct was collected by filtration
4. washrinsed with ethyl acetate (2×500 mL each)
5. customThe wet cake was dried at 50-55° C./<5 mm Hg for 16-20 hours to a constant weight